The Diamond Plate Patterned fabric is tough enough for any outdoor activity! 

• Designed in USA
• Size : 37L in compressed position to 53L when top expanded 8 inches
• Size not including pockets: 14"L x 9"W x 18"- 26" H
• Reinforced Straps 
• Weather-resistant to rain, blizzards, and sub-zero temps 
• Waterproof zippers
• Extra padding in back, top, bottom, and straps 
• Durable and abrasion resistant fabric
• Polyester and polyurethane fabric
• Inside laptop pocket and inside zipper pockets
• Adjustable diamond plate patterned top straps to hold extra items
• Sized for carry-on in compressed position 
• Black plastic swivel snap hooks and a skull rivet

Carry all your "tools" in the Diamond Plate backpack, because tough doesn't always need to be metal!